Burning eyes describes a feeling of burning and irritation of the eyes. Burning eyes can be accompanied by itching, tearing, or discharge from the eyes. Burning eyes have many possible causes. One of the most common is exposure to environmental pollutants such as tobacco smoke, smog, or dust. Chemicals found in household cleaning solvents, such as bleach, soap and shampoo, can lead to burning eyes. Chlorine in swimming pools can also make your eyes burn.
The Louisiana Purchase was an incredible deal for the United States, the final cost totaling less than five cents per acre at $15 million (about $283 million in today's dollars).
Louisiana Purchase summary: The United States bought 828,000 square miles of land from France in 1803. The French controlled this region from 1699 until 1762 when it became Spanish property because France gave it to Spain as a present, since they were allies. But under Napoleon Bonaparte, France revived the aspirations to build an empire in North America so the territory was taken back in 1800.